A small boy is sent to bed by his mother.

[Five minutes later]

"Mom..."

"What?"

"I'm thirsty. Can you bring me a glass of water?"

"No. You had your chance. Lights out."

[Five minutes later]

"Mom..."

"WHAT?"

"I'm THIRSTY... Can I have a glass of water?"

"I told you NO! If you ask again I'll have to spank you!!"

[Five minutes later]

"Mom..."

"WHAT??!!"

"When you come in to spank me, can you bring me a glass of water?"